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Controlled volatile release from β-sitosterol-based oleogels based on different self-assembly mechanisms.

Shujie Wang1, Guoqin Liu2

  • 1Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650550, China.

Food Chemistry
|June 8, 2023
PubMed
Summary

Beta-sitosterol oleogels self-assembly mechanisms control volatile compound release. Different structures affect retention, with SO oleogels showing the strongest effect, indicating potential for controlled release systems.

Keywords:
Control releaseSelf-assembly mechanismsStructural characteristicsVolatile compoundsβ-sitosterol-based oleogels

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Area of Science:

  • Food science and material science
  • Colloid and interface science

Background:

  • Oleogels are structured fats with potential applications in food and pharmaceuticals.
  • Controlling the release of volatile compounds is crucial for product quality and efficacy.

Purpose of the Study:

  • To investigate the influence of self-assembly mechanisms of beta-sitosterol-based oleogels on volatile compound release.
  • To correlate oleogel microstructure with volatile compound retention.

Main Methods:

  • Fabrication of three beta-sitosterol-based oleogels: SO (beta-sitosterol + gamma-oryzanol), SL (beta-sitosterol + lecithin), and SM (beta-sitosterol + monostearate).
  • Characterization using microscopy, X-ray diffraction (XRD), and small-angle X-ray scattering (SAXS) to analyze microstructure.
  • Assessment of oil binding capacity (OBC), complex modulus (G*), and apparent viscosity.
  • Dynamic and static headspace analyses to quantify volatile compound release.

Main Results:

  • Significant differences in microstructure were observed among SO, SL, and SM oleogels due to varying self-assembly mechanisms.
  • SO oleogels demonstrated the highest OBC, G*, and apparent viscosity, indicating superior structural strength.
  • Oleogel network structure significantly impacted volatile component release, with SO exhibiting the strongest retention, followed by SL and SM.

Conclusions:

  • The self-assembly mechanism dictates the microstructure and structural strength of beta-sitosterol oleogels.
  • Oleogel structural properties are key determinants of volatile compound release kinetics.
  • Beta-sitosterol-based oleogels offer tunable platforms for developing controlled release systems for volatile compounds.